I have that same problem.

Alright. my first cannon was a success " the light saber" which was the old spray n pray type. which was rather more complex with fan and inter graded firing system. but really how advance can it get. I want to move up and create an advance propane chamber, But my only choice of pipe from home depot...

Alright i tried to sleeve SDR21 1.5 into SCH 80 2" trying to make a golf ball barrel. Did not get to far... is there a special way to go about doing this?

Yes, it is pushed in all the way, it was extraordinary long.... can you explain the set-up you thought i had? please.

The end i was using was a basic 3" cap. had a bad experience with that, along with having a thread problems. so i re thought my options, and doing so i used a 3" male adapter, bushing down to a 1/2 size plug. i did this to allow a more permanent back end. Since i do all the fueling and loading from ...

i have tried experimenting with the starter fluid only a hand full of times, has only worked once or twice. i will try various amounts and blow in the chamber and turn the fan on, and no boom But eh maybe one of these days i will find the right mixture.

That would have been a good idea, i had not thought of doing so. i have only launched one spud out of her so far. ran into trouble after the first shot. but since then i have shot many socks as a test subject out. She works well with hair spray, having trouble getting car starter fluid to light insi...

Alright, i used the plans found on this site, for simple cannon. I only changed a few parts. Any ideas or suggestions are welcomed. 3' chamber 15" 54" of 1 1/2' for the barrel changeable barrel concept Internal ignition via modified kitchen lighter Internal computer fan. runs off six AA batteries wi...

thanks guys for all the help. Its not that i could only build a spray and pray cannon, just I'm trying to learn a little before moving into the metered propane world. When i do, will i need to build a new chamber or can i use the one i have now. my whole set-up is 54" barrel of 1-1/2" SCH-40 and my ...

Thanks for the help.
i only have built the Basic Combustion Cannon. I'm looking to grow off it and building a Gb barrel for it. i am also looking into the metered propane.

While looking to buy hair spray for my gun, i notice that you can buy hair spray with strong hold (10) or pretty much no hold (1). I'm guessing this is just like hair gel, higher the number the stronger it holds your hair. my question is does it matter? having a lower strength leave less gue in your...